Concrete-mixing machine.



R. G. LEVBRIGH.

CONCRETE MIXING MACHINE.

APPLIOATION FILED DBo.1a.19oa.

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Patented Nov. 30, 1909.

lvumo R. G. LEVERIGH.

CONCRETE MIXING MACHINE.

APPLICATION FILED DEG. 18,1908.

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CONCRETE-MIXING MACHINE.

Speecation of Letters Patent.

Patented Nov. 30, 1909.

i Application led December 18, 1908. Serial No. 468,182.

To all whom it may concern:

Be it known that I, RAPHAEL Gr. LEVERIGH, a citizen of the UnitedStates, residing at Berrien Springs, in the county of Berrien and Stateof Michigan, have invented new and useful Improvements inConcrete-Mixing Machines, of which the following is a specification.

This invention relates to concrete mixing machines, and the main objectof the invention is to provide a portable mixer provided with a suitablesource of power whereby the agitator or mixing arms of the device arerotated within the suitable cylindrical receptacle, the device beingprovided with a cement chamber positioned above the mixing chamber andhaving a suitable outlet communieating with a cylindrical element havinga plurality of pockets, this cylindrical measuring element beingprovided with a central shaft adapted to be operated by a suitable pawland ratchet mechanism as the broken stone or brick is thrown within themixing chamber.

Vith the above and other obj ects in view which will appear as thedescription progresses, the invention resides in the novel constructionand arrangement of parts hereinafter fully described and claimed.

In the accompanying drawings, there has been illustrated a simple andpreferred embodiment of the invention, and in which:

Figure 1 is a side elevation of a mixer constructed in accordance withthe present invention, a portion of the mixing chamber being broken awayto more clearly illustrate the arrangement of the agitator or mixingarms upon the main shaft. Fig. 2 is an enlarged vertical transversesectional view upon the line 2 2 of Fig. 1. Fig. 3 is a similar viewupon the line 3 3 of Fig. 1. Fig. 1 is a detail perspective view of thecement measuring device. Fig. 5 is a detail perspective view of the twosections comprising one of the agitator or mixing arms.

In the accompanying drawings the numeral 1 designates a suitable wheeledtruck. This truck 1 is provided with the usual tongue 2 whereby thedraft animals are attached for moving the said truck when the device isto be transferred from one location to another, it being understood thatwhen the mixing apparatus attached to the truck is in operation, thewheels of the truck are blocked to prevent movement.

The body 3 of the truck 1 is provided with suitable vertically extendingstandards et, which are adapted to support the longitudinally extendingbeams 5 which are adapted for engagement with L-shaped retaining members6 secured upon the main chamber 7 of the device. This chamber 7 isprovided with a longitudinally extending shaft 8 having one of itsoutwardly extending portions provided with a gear wheel 9 which isadapted to mesh with a similar wheel 10 carried by a gasolene engine 11or other suitable motive power. The shaft 8 is provided with a pluralityof spaced agitator or mixing arms 12, and these arms are arranged inpairs, as clearly illustrated in Fig.

5 of the drawings, and each of the members comprising an arm is cut awayadjacent their centers so as to provide a reduced extending portion 13,approximately intermediate of the cylindrical cut away portion 14 whichis adapted to engage upon the shaft 8. The portions of the cut awayportion upon each side of the device opposite the arcuate orsemi-cylindrical part 14 are provided with suitable openings 15 whichare adapted for the reception of threaded retaining elements 1G throughthe medium of which the members comprising the arm are securelypositioned upon the shaft 8.

By reference to Figs. 1, 2, 3 and 5 of the drawings it will be notedthat the oppositely arranged sections comprising the mixing arms 12 arebeveled in opposite directions so that when the shaft S is revolved thematerial within the chamber 7 receives a slicing or cutting motion atdifferent angles so as to thoroughly agitate and mix the said materialand at the same time force the material toward the open mouth of thehopper 7.

lhe numeral 17 designates the cement chamber of the device. This cementchamber is approximately V-shaped in crosssection and is provided with asuitable outlet mouth 18. The cement chamber 17 is provided withenlarged ends 19, and connected with these ends are suitable supportingrods 20, having their lower portions secured upon the beam 5 whereby thesaid casing is effectively sustained above and adjacent one end of themixing chamber 7.

Positioned directly below the mouth 18 of the cement chamber 17 is ameasuring cylinder 21. r1`his cylinder 21 is provided with a pluralityof longitudinally extending pockets 22 which are positioned directlybeneath the mouth 18 so that one or more of the pockets are at all timesfilled with the cement from the chamber 17. The mouth 18 of the chamberhas one of its walls 23 projecting downwardly a. suitable distance so asto act as a shield or door for the pockets of the cylinder 21 which arefilled with cement. The cylinder 21 is provided with a suitable axleextending beyond each of its ends, and the axle is adapted to be mountedin suitable openings provided in the .sides 19 of the chamber 17. rfheportion of the axle extending beyond the sides 19 are squared asindicated by the numeral 2-t, and this squared portion is adapted forthe reception of a toothed wheel 25, while projecting beyond thissquared portion is a reduced rounded portion 2G which is adapted forengagement with a link 27 carrying a pawl 2S which is at all times inengagement with the teeth of the wheel 25. Secured to t-he free end ofthe link 27 is a rod 29. This rod 29 has its upper extremity providedwith a suitable pin 30 which is adapted to engage any one of a series ofperforations 31 provided within an arm 32 extending longitudinally ofthe ends 19 of the casing 17. rlhe ends 19 are prov-ided with L-shapedslots 32, and these slots are adapted for the reception of suitablebearings or trunnions 34 provided upon an apron 35. One of thesetrunnions 34C adapted to extend suitable distance beyond its bearingwithin the L-shaped or bayonet slot 33 and this projecting portion issuitably connected with the arm 33. The arms 32 have connected therewithan apron 35 which is of a width approximately equaling that of thedistance between the sides 19 of the hopper, the said apron has its bodyportion preferably rounded or of an arcuate formation and its endterininating at or slightly below the open top or mouth of the chamber7.

The operation of the device is as follows: The rod 29 has its pintleadjusted to the desired perforation 31 of the arm 32 so as to regulatethe throw of the wheel 25 which is secured to the measuring cylinder 21.rEhe rubble is gathered in shovels and thrown by the workman so as tocontact with and swing the apron 35 inwardly. By so doing it will benoted that the arm 32 will be swung upon its trunnion or connection 34thereby raising the said arm so as to cause the pawl 23 to move thetoothed wheel 25 and the measuring cylinder 21 secured thereto and thuscausing a predetermined amount of cement to be deposited upon the rubblewithin the mixing chamber. lt is to be understood that the shaft S isconstantly rotating and that the agitator arms 12 not only effectivelymix the concrete but etfectively force the concrete to the open mouth ofthe chamber 17 at its end opposite the end upon which the cement chamberis located.

Having thus fully described the invention what is claimed as new is:

1. In a concrete mixing machine, the combination with a mixing chamber,and a cement chamber positioned above the mixing chamber, said cementchamber having an outlet connecting with the mixing chamber, a measuringcylinder comprising a plurality of longitudinally extending pocketsnormally closing the mouth, a swinging apron connected with thecementchamber and positioned directly above the mixing chamber, andmechanism connected with the apron for imparting intermittent revolublemotion to the measuring cylinder as the apron is swung inwardly whencontacted by rubble fed to the mixing chamber.

2. The combination with a mixing cylinder having an open top and anoutlet, of a cement chamber positioned above and adjacent one of theends of the mixing chamber, said cement chamber being provided with ahopper having an outlet mouth positioned directly above the mixingchamber, a measuring cylinder provided with a plurality oflongitudinally extending pockets communieating with and normally closingthe mouth of the hopper, said measuring cylinder being provided withtrunnions extending through the sides of the chamber, a ratchet upon oneof these trunnions, a link provided with a pawl engaging the ratchetwheel upon the trunnion, an apron trunnioned within the sides of thecement chamber and having its lower end terminating at the open mouth ofthe mixing chamber, an arm secured to one of the trunnions of the apronand an adjustable connection between this arm and the link connectedwith the trunnion of the measuring cylinder.

3. ln a mixer of the character described, the combination with a mixingchamber having' a hopper member and a body member provided with an opentop and an outlet mouth, a shaft extending longitudinally of the mixingchamber, an apron hingedly connected with the said chamber, a measuringcylinder below the cement chamber and communicating with the mixingchamber, means provided upon the apron and connected with the mixingchamber to intermittently revolve the measuring cylinder when the apronis contacted with, and a plurality of mixing arms upon the shaft adaptedto mix and to push the mixed material through the open mouth of themixing chamber.

ln testimony whereof l atlix my signature in presence of two witnesses.

RAPHAEL G. LEVERIGH.

lVitnesses ORFA SKINNER, CLAYTON M. NILEs.

